Update xapian core

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.4.22 (March 3rd, 2022)
+
+- version bump to Xapian 1.4.22
+
 ## 1.4.18 (June 29th, 2021)
 
 - version bump to Xapian 1.4.18

Rakefile

@@ -9,7 +9,7 @@ def system!(cmd)
 	system(cmd) or raise
 end
 
-ver = '1.4.18'
+ver = '1.4.27'
 source_dir = 'xapian_source'
 core = "xapian-core-#{ver}"
 bindings = "xapian-bindings-#{ver}"
@@ -47,7 +47,6 @@ task :default do
   system! "rm lib/*.la"
   system! "rm lib/*.lai"
 
-  system! "rm -R #{bindings}"
-  system! "rm -R #{core}"
-  system! "rm -R #{source_dir}"
+  system! "rm -Rf #{bindings}"
+  system! "rm -Rf #{core}"
 end

xapian-ruby.gemspec

@@ -8,7 +8,7 @@ $:.unshift lib unless $:.include?(lib)
 
 Gem::Specification.new do |s|
   s.name         = %q{xapian-ruby}
-  s.version      = "1.4.18"
+  s.version      = "1.4.27"
   s.authors      = ["Gernot Kogler"]
   s.summary      = %q{xapian libraries and ruby bindings}
   s.email        = %q{gernot.kogler (at) garaio (dot) com}