Update cmake modules for Mac

- FindFreetype.cmake: update to work with Freetype 2.5.2’s new header file layout
- FindMySQL.cmake: add suffix and name to find components on Mac
Add .bundle suffix to Ruby module on Mac (#4826)
Fix potential SQL Injection with postgis TIME filters (#4834)
Merge branch 'branch-6-2' into branch-6-4
prepare for 6.2.2 release
fix ubuntu package names in travis
Merge branch 'branch-6-2' into branch-6-4

Conflicts:
	.travis.yml
	HISTORY.TXT
	mapserver.h
prepare for 6.4.1 release
add SVG_INCLUDE_DIR so that svg.h is found
Escape backslashes in the mapfile string writer (#4747)
Adjusting INSPIRE WMS 1.1.1 capabilities. Fixes #4861.
Merge branch 'branch-6-2' into branch-6-4

Conflicts:
	msautotest
update submodule
msOGRFileClose: drop useless OGR mutex that could cause a dead-lock with tileindex (#4869)
Fix blending of semi-opaque pixels in average and bilinear resamplers (#4875)
Restore lexer file pointer on INCLUDE error (#4871)
Switch off ogr-output streaming mode for non default io contexts (#4858)
Fixing a large number of programming errors found by static analysis

issues found by the coverity scanner, most are memory leaks on error
conditions.
Don't apply scalefactor on legend keyimage (#4885)
Fix failed assertion with non-existant svg symbols (#4899)