patch 8.0.1093: various small quickfix issues

Problem:    Various small quickfix issues.
Solution:   Remove ":" prefix from title set by a user. Add the qf_id2nr().
            function. Add a couple more tests.  Update documentation.
            (Yegappan Lakshmanan)

runtime/doc/eval.txt

@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 8.0.  Last change: 2017 Aug 13
+*eval.txt*	For Vim version 8.0.  Last change: 2017 Sep 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1449,7 +1449,7 @@ v:beval_text	The text under or after the mouse pointer.  Usually a word as
 		but a dot and "->" before the position is included.  When on a
 		']' the text before it is used, including the matching '[' and
 		word before it.  When on a Visual area within one line the
-		highlighted text is used.
+		highlighted text is used.  Also see |<cexpr>|.
 		Only valid while evaluating the 'balloonexpr' option.
 
 					*v:beval_winnr* *beval_winnr-variable*
@@ -3301,7 +3301,7 @@ count({comp}, {expr} [, {ic} [, {start}]])			*count()*
 		When {ic} is given and it's |TRUE| then case is ignored.
 
 		When {comp} is a string then the number of not overlapping
-		occurences of {expr} is returned.
+		occurrences of {expr} is returned.
 
 
 							*cscope_connection()*
@@ -3467,7 +3467,7 @@ escape({string}, {chars})				*escape()*
 			:echo escape('c:\program files\vim', ' \')
 <		results in: >
 			c:\\program\ files\\vim
-<		Also see |shellescape()|.
+<		Also see |shellescape()| and |fnameescape()|.
 
 							*eval()*
 eval({string})	Evaluate {string} and return the result.  Especially useful to
@@ -3887,7 +3887,7 @@ float2nr({expr})					*float2nr()*
 		When the value of {expr} is out of range for a |Number| the
 		result is truncated to 0x7fffffff or -0x7fffffff (or when
 		64-bit Number support is enabled, 0x7fffffffffffffff or
-		-0x7fffffffffffffff.  NaN results in -0x80000000 (or when
+		-0x7fffffffffffffff).  NaN results in -0x80000000 (or when
 		64-bit Number support is enabled, -0x8000000000000000).
 		Examples: >
 			echo float2nr(3.95)
@@ -4657,12 +4657,12 @@ getqflist([{what}])					*getqflist()*
 		If "nr" is not present then the current quickfix list is used.
 		If both "nr" and a non-zero "id" are specified, then the list
 		specified by "id" is used.
-		To get the number of lists in the quickfix stack, set 'nr' to
-		'$' in {what}. The 'nr' value in the returned dictionary
+		To get the number of lists in the quickfix stack, set "nr" to
+		"$" in {what}. The "nr" value in the returned dictionary
 		contains the quickfix stack size.
-		When 'text' is specified, all the other items are ignored. The
-		returned dictionary contains the entry 'items' with the list
-		of entries.
+		When "lines" is specified, all the other items except "efm"
+		are ignored.  The returned dictionary contains the entry
+		"items" with the list of entries.
 		In case of error processing {what}, an empty dictionary is
 		returned.
 
@@ -6967,6 +6967,7 @@ setline({lnum}, {text})					*setline()*
 			:for [n, l] in [[5, 'aaa'], [6, 'bbb'], [7, 'ccc']]
 			:  call setline(n, l)
 			:endfor
+
 <		Note: The '[ and '] marks are not set.
 
 setloclist({nr}, {list}[, {action}[, {what}]])		*setloclist()*
@@ -7164,16 +7165,17 @@ setreg({regname}, {value} [, {options}])
 			:call setreg('a', "1\n2\n3", 'b5')
 
 <		This example shows using the functions to save and restore a
-		register (note: you may not reliably restore register value 
-		without using the third argument to |getreg()| as without it 
-		newlines are represented as newlines AND Nul bytes are 
-		represented as newlines as well, see |NL-used-for-Nul|). >
+		register: >
 			:let var_a = getreg('a', 1, 1)
 			:let var_amode = getregtype('a')
 			    ....
 			:call setreg('a', var_a, var_amode)
+<		Note: you may not reliably restore register value 
+		without using the third argument to |getreg()| as without it 
+		newlines are represented as newlines AND Nul bytes are
+		represented as newlines as well, see |NL-used-for-Nul|.
 
-<		You can also change the type of a register by appending
+		You can also change the type of a register by appending
 		nothing: >
 			:call setreg('a', '', 'al')
 
@@ -8145,7 +8147,7 @@ term_start({cmd}, {options})				*term_start()*
 		are supported:
 		   all timeout options
 		   "stoponexit"
-		   "out_cb", "err_cb"
+		   "callback", "out_cb", "err_cb"
 		   "exit_cb", "close_cb"
 		   "in_io", "in_top", "in_bot", "in_name", "in_buf"
 		   "out_io", "out_name", "out_buf", "out_modifiable", "out_msg"
@@ -8165,6 +8167,7 @@ term_start({cmd}, {options})				*term_start()*
 		   "curwin"	     use the current window, do not split the
 				     window; fails if the current buffer
 				     cannot be |abandon|ed
+		   "hidden"	     do not open a window
 		   "term_finish"     What to do when the job is finished:
 					"close": close any windows
 					"open": open window if needed
@@ -8562,7 +8565,7 @@ win_getid([{win} [, {tab}]])				*win_getid()*
 		Get the |window-ID| for the specified window.
 		When {win} is missing use the current window.
 		With {win} this is the window number.  The top window has
-		number 1.
+		number 1.  Use `win_getid(winnr())` for the current window.
 		Without {tab} use the current tab, otherwise the tab with
 		number {tab}.  The first tab has number one.
 		Return zero if the window cannot be found.

runtime/doc/quickfix.txt

@@ -44,6 +44,18 @@ From inside Vim an easy way to run a command and handle the output is with the
 The 'errorformat' option should be set to match the error messages from your
 compiler (see |errorformat| below).
 
+							*quickfix-ID*
+Each quickfix list has a unique identifier called the quickfix ID and this
+number will not change within a Vim session. The getqflist() function can be
+used to get the identifier assigned to a list.
+
+							*quickfix-ID*
+Each quickfix list has a unique identifier called the quickfix ID and this
+number will not change within a Vim session. The getqflist() function can be
+used to get the identifier assigned to a list. There is also a quickfix list
+number which may change whenever more than ten lists are added to a quickfix
+stack.
+
 						*location-list* *E776*
 A location list is a window-local quickfix list. You get one after commands
 like `:lvimgrep`, `:lgrep`, `:lhelpgrep`, `:lmake`, etc., which create a