pystring meson build system generates library with wrong soname

[ametzler]

When building with classic make system one gets:

ametzler@argenau:/tmp/PYSTRING$ objdump -p path/to/libpystring.so.0.0 | grep -i soname
  SONAME               libpystring.so.0

while the meson build creates

objdump -p path/to/libpystring.so.1.2.0  | grep -i soname
  SONAME               libpystring.so.1

For debian we are using this patch by Sébastien Noel to fix this:

Description: Set the library version to "0.0.0", the same as it used to be
 when using the handwritten Makefile

--- a/meson.build
+++ b/meson.build
@@ -37,7 +37,7 @@
         srcs,
         implicit_include_directories: false,
         include_directories: inc,
-        version: meson.project_version(),
+        version: '0.0.0',
         install: true,
     )