Add a ctags package containing Universal Ctags

The ctags implementation from Universal Ctags (https://ctags.io/)
is hopefully the best ctags alternative that works with e.g. vim.

Remove the ctags binary from emacs so it does not conflict with
this new package (the etags program remains for emacs to use).

packages/ctags/build.sh

@@ -0,0 +1,14 @@
+TERMUX_PKG_HOMEPAGE=https://ctags.io/
+TERMUX_PKG_DESCRIPTION="Universal ctags: Source code index builder"
+TERMUX_PKG_VERSION=0.0.20160317
+_COMMIT=6126cb13375fd659e53e7cd9a943446f72048c07
+TERMUX_PKG_SRCURL=https://github.com/universal-ctags/ctags/archive/${_COMMIT}.zip
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="--enable-tmpdir=$TERMUX_PREFIX/tmp"
+TERMUX_PKG_FOLDERNAME=ctags-$_COMMIT
+TERMUX_PKG_BUILD_IN_SRC="yes"
+
+termux_step_post_extract_package () {
+	export regcomp_works=yes
+	cd $TERMUX_PKG_SRCDIR
+	./autogen.sh
+}

packages/emacs/build.sh

@@ -1,14 +1,18 @@
 TERMUX_PKG_HOMEPAGE=http://www.gnu.org/software/emacs/
 TERMUX_PKG_DESCRIPTION="Extensible, customizable text editor-and more"
 TERMUX_PKG_VERSION=24.5
-TERMUX_PKG_BUILD_REVISION=2
+TERMUX_PKG_BUILD_REVISION=3
 TERMUX_PKG_SRCURL=http://ftp.gnu.org/pub/gnu/emacs/emacs-${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_DEPENDS="ncurses"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="--without-x --with-xpm=no --with-jpeg=no --with-png=no --with-gif=no --with-tiff=no --without-gconf --without-gsettings --without-all"
 TERMUX_PKG_HOSTBUILD="yes"
 
 # Note that we remove leim:
-TERMUX_PKG_RM_AFTER_INSTALL="share/icons share/emacs/${TERMUX_PKG_VERSION}/etc/images share/applications/emacs.desktop share/emacs/${TERMUX_PKG_VERSION}/etc/emacs.desktop share/emacs/${TERMUX_PKG_VERSION}/etc/emacs.icon bin/grep-changelog share/man/man1/grep-changelog.1.gz share/emacs/${TERMUX_PKG_VERSION}/etc/refcards share/emacs/${TERMUX_PKG_VERSION}/etc/tutorials/TUTORIAL.* share/emacs/${TERMUX_PKG_VERSION}/leim"
+TERMUX_PKG_RM_AFTER_INSTALL="share/icons share/emacs/${TERMUX_PKG_VERSION}/etc/images share/applications/emacs.desktop share/emacs/${TERMUX_PKG_VERSION}/etc/emacs.desktop share/emacs/${TERMUX_PKG_VERSION}/etc/emacs.icon bin/grep-changelog share/man/man1/grep-changelog.1.gz share/emacs/${TERMUX_PKG_VERSION}/etc/refcards share/emacs/${TERMUX_PKG_VERSION}/etc/tutorials/TUTORIAL.*"
+# Remove ctags from the emacs package to prevent conflicting with
+# the Universal Ctags from the 'ctags' package. The bin/etags
+# program still remain in the emacs package.
+TERMUX_PKG_RM_AFTER_INSTALL+=" bin/ctags share/man/man1/ctags.1"
 
 # http://www.gnu.org/software/emacs/manual/html_node/elisp/Building-Emacs.html#Building-Emacs
 # "Compilation of the C source files in the src directory produces an executable file called temacs, also called a