[cairo] pixman-1.pc provides wrong libname

[Dennis Heuer]

hello,

i had a hell lot of trouble with the newest xorg-server because it just
didn't want to install. first i thought that i have a wrong libpixman
(didn't understand that pixman is actually equivalent to libpixman.
possibly a new official release outside ftp.x.org with a short info
about the namechange could help other people to not confuse things up.)
however, that wasn't the real problem. after putting some links at the
right places to let xorg-server take pixman-1.pc instead of the checked
for pixman.pc, things first seemed to work. however, only the header
file was found correctly. this is, to make a cut here, because the file
pixman-1.pc provides -lpixman instead of -lpixman-1. in result,
xorg-server always found the old version and caused bad reference calls.

regards,
dennis heuer