xfreerdp: added wm-class option to set WM_CLASS hint

based on 96290efd76d1762a4cbf78e09f3ff0e40fa4cf07

fixes #1138
xfreerdp/man page: added --wm-class option
security: add a NULL pointer check to fix a server crash

based on 7d58aac24fe20ffaad7bd9b40c9ddf457c1b06e7
libfreerdp-core: fix timezone redirection
scripts: added Time Zone Redirection table generator
libfreerdp-core: move timezone code from info.c to timezone.c
libfreerdp-core: added generated Time Zone Redirection table
libfreerdp-core: add unix timezone identifier detection
libfreerdp-core: add full timezone redirection support
libfreerdp-core: cleanup time zones
backported timezone redirection

should be equal with 777dff2d0b497750a10eef7132416eb841885933
Merge pull request #3 from zstegi/stable-1.0

backported timezone redirection
transport: set pointers to NULL after free
Merge pull request #1547 from bmiklautz/stable-1.0

Fixes and improvements