Revision 527653

Update to 2.18.11

* No longer warn for manpages installed under share/man [1]
* Remove code to combine comments and blank lines in a section [2]
* Remove code to combine comments and blank lines [3]
* USE_PYQT sets the necessary QT USES [4]
* Only warn on lack of INSTALLS_ICONS when USES=gnome is set [5]
* Check for files that have been patched multiple times [6]

PR:		240359 [2]
		244480 [3]
		240445 [4]
		244039 [5]
		243600 [6]
Submitted by:	0mp [1] [5]
		vladimir.chukharev@gmail.com [4]
		swills [6]
Differential Revision:	D23896 [1]