apr: import from oldpackages, add myself as maintainer, add license

information, update source-url, update to v1.5.1

Signed-off-by: Thomas Heil <heil@terminal-consulting.de>

libs/apr/patches/001-autoconf-compat.patch

@@ -0,0 +1,22 @@
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -3,6 +3,7 @@ srcdir=@srcdir@
+ VPATH=@srcdir@
+ top_srcdir=@apr_srcdir@
+ top_blddir=@apr_builddir@
++top_builddir=@top_builddir@
+ 
+ #
+ # APR (Apache Portable Runtime) library Makefile.
+--- a/configure.in
++++ b/configure.in
+@@ -246,9 +246,6 @@ case $host in
+     gcc $CFLAGS $CPPFLAGS -o $LIBTOOL.exe $LIBTOOL.c
+     ;;
+ *)
+-    if test "x$LTFLAGS" = "x"; then
+-        LTFLAGS='--silent'
+-    fi
+     if test "$experimental_libtool" = "yes"; then
+         # Use a custom-made libtool replacement
+         echo "using jlibtool"