Plug a few possible small memory leaks
Autotools: enable Automake warnings
Autotools: always put object files in the source file's directory

Enable Automake option "subdir-object" to put all object files next to
their source file rather than in the directory containing the Makefile.

This is quite expected, and will be the future behavior of Automake in
all cases, so enabling it now avoids future unexpected change.
Autotools: fix building the documentation in VPATH builds
Autotools: use the target file as the base rule for building documentation

This allows automatic building of the file when required, and allows
user to request building that specific file.
Fix a typo in the documentation's markup
Fix truncation of the data retrieved with --list-documents

Do not truncate the document list to the size of the buffer used for
communication.

Since we now read multiple times, we need to make sure to always send
ETX so a reader don't hang reading the next chunk if the data sent had
exactly the size of the buffer.
Update NEWS
Fix handling of --list-documents when no other instance are running

Properly exit when passed --list-documents, even if no other instance
were already running.  This makes this option behave the same in any
case, making it easier to use in e.g. scripts.
Fix portability of make rules to build documentation

Support for "$<" automatic variable in non-suffix rules is a GNU Make
extension: don't use it.
JavaScript: fix parsing of files starting with a shebang

Closes #1016.
Add a Rust ctags generator
Added the Rust filetype
Add Rust ctag tests
Add Rust ctag test outputs
Add Rust tests to the makefile
Use :: as the context separator for Rust
Fix warnings and a few bugs uncovered by them
Import the Rust lexer from Scintilla
Integrate the Rust lexer with the rest of Geany's functionality