Add includedir override and fix pkgconfig file substitutions

libressl.spec

@@ -12,6 +12,7 @@
 # We need to override macros set in platform
 %define _prefix /opt/libressl
 %define _bindir %{_prefix}/bin
+%define _includedir %{_prefix}/include
 %define _libdir %{_prefix}/%{_lib}
 %define _libexecdir %{_prefix}/libexec
 %define _datadir %{_prefix}/share
@@ -60,7 +61,7 @@
 Summary:		LibreSSL utils and libs coexisting with OpenSSL
 Name:			libressl
 Version:		%{base_version}.git%{git_date}
-Release:		14
+Release:		15
 # The code is distributed under ISC license except of original OpenSSL code
 License:		ISC and BSD-like
 Group:			System/Base
@@ -353,7 +354,7 @@ do
       # It is lost due to --exec_prefix=XXX in %%configure2_5x
       sed -i -r \
         -e 's,^exec_prefix=.+,exec_prefix=${prefix},' \
-        -e 's,^libdir=.+,libdir=${exec_prefix}/lib,' \
+        -e 's,^libdir=.+,libdir=${exec_prefix}/%{_lib},' \
         -e 's,^includedir=.+,includedir=${prefix}/include,' \
         "$f"
       mv -v "$f" "libressl-${f}"