seafile-server: adjust to libevhtp 1.2.18

libevhtp 1.2.18 made API changes, and unbundled oniguruma.

To adapt seafile-server, some patches from Alexandre Rossi's debian
packaging at http://sousmonlit.zincube.net/~niol/repositories.git/
were applied.

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>

net/seafile-server/patches/110-libevhtp-linking.patch

@@ -0,0 +1,40 @@
+Author: David Barbion <davidb@230ruedubac.fr>
+Description: Use shared object for libevhtp
+Forwarded: https://github.com/haiwen/seafile-server/pull/12
+
+Index: seafile-server/configure.ac
+===================================================================
+--- seafile-server.orig/configure.ac
++++ seafile-server/configure.ac
+@@ -218,6 +218,10 @@ PKG_CHECK_MODULES(LIBEVENT, [libevent >=
+ AC_SUBST(LIBEVENT_CFLAGS)
+ AC_SUBST(LIBEVENT_LIBS)
+ 
++PKG_CHECK_MODULES(LIBEVHTP, [evhtp])
++AC_SUBST(LIBEVHTP_CFLAGS)
++AC_SUBST(LIBEVHTP_LIBS)
++
+ PKG_CHECK_MODULES(ZLIB, [zlib >= $ZLIB_REQUIRED])
+ AC_SUBST(ZLIB_CFLAGS)
+ AC_SUBST(ZLIB_LIBS)
+Index: seafile-server/server/Makefile.am
+===================================================================
+--- seafile-server.orig/server/Makefile.am
++++ seafile-server/server/Makefile.am
+@@ -13,6 +13,7 @@ AM_CFLAGS = -DPKGDATADIR=\"$(pkgdatadir)
+ 	@GLIB2_CFLAGS@ \
+ 	@MSVC_CFLAGS@ \
+ 	@LIBARCHIVE_CFLAGS@ \
++	@LIBEVHTP_CFLAGS@ \
+ 	-Wall
+ 
+ bin_PROGRAMS = seaf-server
+@@ -114,7 +115,7 @@ seaf_server_SOURCES = \
+ 
+ seaf_server_LDADD = @CCNET_LIBS@ \
+ 	$(top_builddir)/lib/libseafile_common.la \
+-	@GLIB2_LIBS@ @GOBJECT_LIBS@ @SSL_LIBS@ @LIB_RT@ @LIB_UUID@ -lsqlite3 @LIBEVENT_LIBS@ -levhtp \
++	-lonig @GLIB2_LIBS@ @GOBJECT_LIBS@ @SSL_LIBS@ @LIB_RT@ @LIB_UUID@ -lsqlite3 @LIBEVENT_LIBS@ @LIBEVHTP_LIBS@ \
+ 	$(top_builddir)/common/cdc/libcdc.la \
+ 	$(top_builddir)/common/db-wrapper/libdbwrapper.la \
+ 	@SEARPC_LIBS@ @JANSSON_LIBS@ ${LIB_WS32} @ZLIB_LIBS@ \