New Recipe: Wcslib (#4972)

* WCSLib - new recipe

sci-astronomy/wcslib/patches/wcslib-7.2.patchset

@@ -0,0 +1,22 @@
+From 619f1d199dd6451f82659827792348bfc54d0610 Mon Sep 17 00:00:00 2001
+From: Gabriele Baldassarre <gabriele@gabrielebaldassarre.com>
+Date: Sun, 10 May 2020 22:41:35 +0000
+Subject: Changed -lsocket to -lnetwork
+
+
+diff --git a/configure.ac b/configure.ac
+index 4b5c521..317e90a 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -434,7 +434,7 @@ if test "x$with_cfitsio" != xno -o \
+       AC_CHECK_FILE([$INCDIR/fitsio.h], [CFITSIOINC="-I$INCDIR"; break])
+     done
+ 
+-    AC_CHECK_LIB([socket],  [recv],   [CFITSIOLIB="-lsocket"], [], [$LIBS])
++    AC_CHECK_LIB([network],  [recv],   [CFITSIOLIB="-lnetwork"], [], [$LIBS])
+     AC_CHECK_LIB([cfitsio], [ffopen], [CFITSIOLIB="-lcfitsio $CFITSIOLIB"], [],
+                  [$CFITSIOLIB $LIBS])
+ 
+-- 
+2.26.0
+