Add libev package

packages/libev/Makefile.in.patch

@@ -0,0 +1,12 @@
+diff -u -r ../libev-4.22/Makefile.in ./Makefile.in
+--- ../libev-4.22/Makefile.in	2015-12-20 16:12:45.000000000 -0500
++++ ./Makefile.in	2016-02-02 10:30:17.445084694 -0500
+@@ -343,7 +343,7 @@
+ 	     ev.3 ev.pod Symbols.ev Symbols.event
+ 
+ man_MANS = ev.3
+-include_HEADERS = ev.h ev++.h event.h
++include_HEADERS = ev.h ev++.h
+ lib_LTLIBRARIES = libev.la
+ libev_la_SOURCES = ev.c event.c
+ libev_la_LDFLAGS = -version-info $(VERSION_INFO)

packages/libev/build.sh

@@ -0,0 +1,6 @@
+TERMUX_PKG_HOMEPAGE=http://software.schmorp.de/pkg/libev.html
+TERMUX_PKG_DESCRIPTION="Full-featured and high-performance event loop library"
+TERMUX_PKG_VERSION=4.22
+TERMUX_PKG_SRCURL=http://dist.schmorp.de/libev/libev-${TERMUX_PKG_VERSION}.tar.gz
+
+CFLAGS+=" -Dfd_mask=int"