rely on b_coverage flag

Author: jcapriot

Diff for: meson.options

@@ -1,5 +1,3 @@
-option('cy_coverage', type : 'boolean', value : false)
-
 option('use-sdl', type: 'boolean', value: true,
        description: 'Use the single dynamic library.')
 

Diff for: pydiso/meson.build

@@ -95,7 +95,7 @@ cython_c_args = [numpy_nodepr_api, use_math_defines]\
 cython_file = 'mkl_solver.pyx'
 cython_file_full_path = meson.current_source_dir() / cython_file
 
-if get_option('cy_coverage')
+if get_option('b_coverage')
   # tell cython to enable linetracing
   add_project_arguments(['--directive', 'linetrace=true'], language : 'cython')
   # tell the c_compiler to definie the CYTHON_TRACE_NOGIL