Fix icon install & remove .install

Icons are now installed into /usr/share/icons and the desktop file now
specifies an icon file without a path.

The .install file is no longer needed since pacman 5.0.0 because it
introducted hooks (see /usr/share/libalpm/hooks) which take care of
updating all kinds of databases.

.SRCINFO

@@ -1,10 +1,9 @@
 pkgbase = freecad-git
 	pkgdesc = A general purpose 3D CAD modeler - git checkout
-	pkgver = 0.17pre.r1771.gf944ab3
+	pkgver = 0.17pre.r3401.g99fa203f3
 	pkgrel = 1
 	epoch = 1
 	url = http://www.freecadweb.org/
-	install = freecad.install
 	arch = i686
 	arch = x86_64
 	license = LGPL
@@ -27,7 +26,6 @@ pkgbase = freecad-git
 	depends = xerces-c
 	depends = python2-pivy
 	depends = python2-pyside
-	depends = qtwebkit
 	depends = libtheora
 	depends = shared-mime-info
 	depends = vtk-qt4
@@ -37,13 +35,11 @@ pkgbase = freecad-git
 	provides = freecad
 	conflicts = freecad
 	source = freecad-git::git+https://github.com/FreeCAD/FreeCAD.git
-	source = freecad.install
 	source = freecad.desktop
 	source = freecad.xml
 	source = fem-rpath.patch
 	md5sums = SKIP
-	md5sums = 2fad48203f96f1e7cb97934ea20ed848
-	md5sums = 0a4d0635dbd97d9f594ac8e927284316
+	md5sums = 7e781d41e90a1c137930e47672996a52
 	md5sums = c2f4154c8e4678825411de8e7fa54c6b
 	md5sums = 99a41687a9ba980eea86aee4345d9a1d