meson.build: refuse to build with buggy Boost version 1.67

NEWS

@@ -9,6 +9,7 @@ ver 0.21.1 (not yet released)
 * fix build failure on Linux-PowerPC
 * fix build failure on FreeBSD
 * eliminate DLL dependencies on Windows
+* refuse to build with buggy Boost version 1.67
 * require Meson 0.47.2 because a Meson 0.47.1 bug breaks our build
 
 ver 0.21 (2018/10/31)

meson.build

@@ -172,6 +172,11 @@ inc = include_directories(
 )
 
 boost_dep = dependency('boost', version: '>= 1.58')
+if boost_dep.version() == '1.67'
+  # https://github.com/MusicPlayerDaemon/MPD/pull/384
+  # https://github.com/boostorg/lockfree/commit/12726cda009a855073b9bedbdce57b6ce7763da2
+  error('Your Boost version 1.67 is known to be buggy, and the MPD build will fail. Please upgrade to Boost 1.68 or later.')
+endif
 
 sources = [
   version_cxx,