Silenced and fixed many warning messages across multiple files.

src/OSSupport/File.cpp

@@ -156,7 +156,7 @@ int cFile::Read (void * iBuffer, size_t iNumBytes)
 		return -1;
 	}
 	
-	return (int)fread(iBuffer, 1, (size_t)iNumBytes, m_File);  // fread() returns the portion of Count parameter actually read, so we need to send iNumBytes as Count
+	return static_cast<int>(fread(iBuffer, 1, static_cast<size_t>(iNumBytes), m_File));  // fread() returns the portion of Count parameter actually read, so we need to send iNumBytes as Count
 }
 
 
@@ -172,7 +172,7 @@ int cFile::Write(const void * iBuffer, size_t iNumBytes)
 		return -1;
 	}
 
-	int res = (int)fwrite(iBuffer, 1, (size_t)iNumBytes, m_File);  // fwrite() returns the portion of Count parameter actually written, so we need to send iNumBytes as Count
+	int res = static_cast<int>(fwrite(iBuffer, 1, static_cast<size_t>(iNumBytes), m_File));  // fwrite() returns the portion of Count parameter actually written, so we need to send iNumBytes as Count
 	return res;
 }
 
@@ -236,7 +236,7 @@ long cFile::GetSize(void) const
 		return -1;
 	}
 	long res = Tell();
-	if (fseek(m_File, (long)CurPos, SEEK_SET) != 0)
+	if (fseek(m_File, static_cast<long>(CurPos), SEEK_SET) != 0)
 	{
 		return -1;
 	}
@@ -272,7 +272,7 @@ int cFile::ReadRestOfFile(AString & a_Contents)
 	
 	// HACK: This depends on the internal knowledge that AString's data() function returns the internal buffer directly
 	a_Contents.assign(DataSize, '\0');
-	return Read((void *)a_Contents.data(), DataSize);
+	return Read(reinterpret_cast<void *>(const_cast<char *>(a_Contents.data())), DataSize);
 }
 
 
@@ -366,7 +366,7 @@ long cFile::GetSize(const AString & a_FileName)
 	struct stat st;
 	if (stat(a_FileName.c_str(), &st) == 0)
 	{
-		return (int)st.st_size;
+		return static_cast<int>(st.st_size);
 	}
 	return -1;
 }