Get icu sources from an archive instead of svn.

SVN checkout can be pretty long to do (especially if icu serveur is pretty
slow).

By downloading an archive on our own server, we avoid a spending too many
time downloading.

The archive is a simple targz of the SVN checkout.

kiwixbuild/dependencies/icu4c.py

@@ -1,20 +1,18 @@
 from .base import (
     Dependency,
-    SvnClone,
+    ReleaseDownload,
     MakeBuilder
 )
 
-from kiwixbuild.utils import SkipCommand
+from kiwixbuild.utils import SkipCommand, Remotefile
 from kiwixbuild._global import get_target_step
 
 class Icu(Dependency):
     name = "icu4c"
 
-    class Source(SvnClone):
-        name = "icu4c"
-        svn_remote = "http://source.icu-project.org/repos/icu/tags/release-58-2/icu4c"
-        svn_dir = "icu4c"
-
+    class Source(ReleaseDownload):
+        archive = Remotefile('icu4c_svn_58-2.tar.gz',
+                             'fd8fcc1f1b8b2b71b879e88844480ebec107189c21076c81573f71dca5686a0d')
         patches = ["icu4c_fix_static_lib_name_mingw.patch",
                    "icu4c_android_elf64_st_info.patch",
                    "icu4c_custom_data.patch",

kiwixbuild/versions.py

@@ -10,7 +10,7 @@ main_project_versions = {
 
 # This is the "version" of the whole base_deps_versions dict.
 # Change this when you change base_deps_versions.
-base_deps_meta_version = '9'
+base_deps_meta_version = '10'
 
 
 base_deps_versions = {