SuperBuild: macosx detect libproj.dylib and use @rpath

SuperBuild/patches/GEOTIFF/fix-configure-script.diff

 diff -burN libgeotiff-1.4.1.orig/configure libgeotiff-1.4.1/configure
 --- libgeotiff-1.4.1.orig/configure	2016-04-15 17:57:22.000000000 +0200
-+++ libgeotiff-1.4.1/configure	2016-04-15 18:00:56.000000000 +0200
++++ libgeotiff-1.4.1/configure	2016-04-19 09:33:34.000000000 +0200
+@@ -10079,9 +10079,9 @@
+   esac
+   if test "$_lt_dar_can_shared" = "yes"; then
+     output_verbose_link_cmd=func_echo_all
+-    archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
++    archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \@rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+     module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+-    archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
++    archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \@rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+     module_expsym_cmds="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+ 
+   else
 @@ -16101,7 +16101,7 @@
  
      PROJ_CONFIG="yes"