0.5.18

This is a minor bug-fix release:

• Fixed [#120] Trigger request line parsing on
  incomplete request [Victor Julien]
• Fixed [#119] Fix uninitialized htp_tx_t::is_last value
  in in htp_tx_res_process_body_data_ex() [Fedor Sakharov]
• Fixed [#118] Coverity-identified missing break in switch [Sam Baskinger]
• Fixed [#117] Coverity-identified issue of not checking
  malloc() return value [Sam Baskinger]
• Fixed [#116] Fix coverity-identified leaked file descriptors
  in unit test [Sam Baskinger]
• Fixed [#113] fix pkgconfig include dir [Eric Leblond]
• Fixed [#111] Connect plain http [Victor Julien]
• Fixed [#105] Do not invoke callbacks in htp_req_run_hook_body_data()
  when there is no tx running. [Sam Baskinger]
• Fixed [#104] Modifiying HTTP methods to be rfc3253 compliant [Andreas Moe]
• Fixed [#103] Fixes [Victor Julien]
• Fixed [#101] Make including the autoconf config header safer [Brian Rectanus]