FIX: Build under OS X

git-svn-id: http://svn.code.sf.net/p/doublecmd/code/trunk@5687 10bb5c37-c6d6-4c74-9a2a-30fc9b6e22f7
FIX: Crash in python scripts on import error

git-svn-id: http://svn.code.sf.net/p/doublecmd/code/trunk@5688 10bb5c37-c6d6-4c74-9a2a-30fc9b6e22f7
UPD: Add rabbitvcs-core as suggests package for doublecmd-common-*.deb 

git-svn-id: http://svn.code.sf.net/p/doublecmd/code/trunk@5689 10bb5c37-c6d6-4c74-9a2a-30fc9b6e22f7
FIX: Build under Ubuntu

git-svn-id: http://svn.code.sf.net/p/doublecmd/code/trunk@5690 10bb5c37-c6d6-4c74-9a2a-30fc9b6e22f7
UPD: Use another way to determine OS X

git-svn-id: http://svn.code.sf.net/p/doublecmd/code/trunk@5691 10bb5c37-c6d6-4c74-9a2a-30fc9b6e22f7
ADD: GnuTls

git-svn-id: http://svn.code.sf.net/p/doublecmd/code/trunk@5692 10bb5c37-c6d6-4c74-9a2a-30fc9b6e22f7
FIX: Show context menu on empty space with right mouse button selection mode

git-svn-id: http://svn.code.sf.net/p/doublecmd/code/trunk@5693 10bb5c37-c6d6-4c74-9a2a-30fc9b6e22f7
FIX: Don't show stderr output when check pmount/udisksctl
FIX: Check pumount first because Puppy Linux has another tool named pmount

git-svn-id: http://svn.code.sf.net/p/doublecmd/code/trunk@5694 10bb5c37-c6d6-4c74-9a2a-30fc9b6e22f7