Log Message:
Upgrade to latest pidgin-sipe-1.6.3.

version 1.6.3 (2009-09-09)
       - Added missing krb5-devel BuildRequires to the RPM spec file.
       - Cleanup of source code compatibility for libpurple 2.4.x
       - Fixed for msrtc statuses, bug #2843985 
       - Fixed HTML markup in note, bug #2841095
       - Fixed a segmentation fauls when the function sipmsg_parse_header backs
a null value.
       - Possible fixed a crash when SIPE account added, bug #2844545
       - Reduced libpurple build requisite to >= 2.3.1 
       - Fixed NetBSD compilation errors in sipe-utils.c, bug #2847380
       - Updated zh_CN translation
       - Fixed a crash when pidgin auto-away fires, bug #2849156