appindicator3-0.1.pc has incorrect include path

libappindicator provides two .pc files: appindicator-0.1.pc and appindicator3-0.1.pc
The include path's on both files are pretty much the same (and according to Ken, so are the includes), nevertheless my package built for GTK+-3.0 installs the headers on %_includedir/libappindicator3-0.1/ which doesn't match the contents of appindicator3-0.1.pc. All packages which require libappindicator and get the info from pkgconfig break by not finding the headers.

The attached patch should fix this issue. Since libappindicator is supplied with 2 different .pc files (I suppose the other if for GTK2) this can (or maybe not) be a potential fix.

All the best,
NM

'appindicator3-0.1.pc' file