Switch gcc dependenency to gcc-libs

pkg.info

@@ -1,8 +1,9 @@
 name: fftw
 description: C subroutine library for computing the discrete Fourier transform
 version: 3.3.10
+revision: 2
 url: http://www.fftw.org/
 license: GPL2-or-later
 architecture: any
-depends: ["gcc","glibc"]
+depends: ["gcc-libs", "glibc"]
 type: source