misc: Replace libosmocore with talloc
The libosmocore depedency is used for talloc and OSMO_ASSERT.
Reduce the depedencies by using libtalloc directly and replace
the ASSERT with a local one (without backtrace support).
diff --git a/libasn1c.pc.in b/libasn1c.pc.in
index 149fe2d..89ad53a 100644
--- a/libasn1c.pc.in
+++ b/libasn1c.pc.in
@@ -6,6 +6,6 @@
Name: asn1c runtime library
Description: C Utility Library
Version: @VERSION@
-Libs: -L${libdir} -lasn1c -lm
-Cflags: -I${includedir}/ -I${includedir}/asn1c
+Libs: -L${libdir} @LIBTALLOC_LIBS@ -lasn1c -lm
+Cflags: -I${includedir}/ -I${includedir}/asn1c @LIBTALLOC_CFLAGS@