Use %autosetup instead of deprecated %patchX macros

and reindent patches

Fixes:

RPM build warnings:
    %patchN is deprecated (3 usages found), use %patch N (or %patch -P N)

libmatchbox.spec

@@ -33,10 +33,7 @@ Requires:       pkgconfig
 Static libraries and header files from %{name}
 
 %prep
-%setup -q
-%patch0 -p1 -b .add-needed
-%patch1 -p1 -b .libpng
-%patch2 -p1
+%autosetup -p 1
 
 %build
 autoreconf -v --install