option('manpage', type: 'boolean', value: true, description: 'Build man pages')
option('gcrypt', type: 'boolean', value: true, description: 'With gcrypt and transport encryption')
option('debugging', type: 'boolean', value: false, description: 'Turn debugging on/off')
option('vapi', type: 'boolean', value: true, description: 'Create VAPI file.')
option('gtk_doc', type: 'boolean', value: true, description: 'Build reference documentation using gtk-doc')
option('introspection', type: 'boolean', value: true, description: 'Create GIR file.')
option('bashcompdir', type: 'string', value: '', description: 'Override default location for bash completion files')

option('manpage', type: 'boolean', value: true, description: 'Build man pages')
option('gcrypt', type: 'boolean', value: true, description: 'With gcrypt and transport encryption')
option('debugging', type: 'boolean', value: false, description: 'Turn debugging on/off')
option('vapi', type: 'boolean', value: true, description: 'Create VAPI file.')
option('gtk_doc', type: 'boolean', value: true, description: 'Build reference documentation using gtk-doc')
option('introspection', type: 'boolean', value: true, description: 'Create GIR file.')
option('bashcompdir', type: 'string', value: '', description: 'Override default location for bash completion files')
option('bash_completion', type: 'feature', value: 'auto', description: 'Install bash completion files')

Add meson option to set default bash_completion installation location
Add meson option to set default bash_completion installation
location

These changes introduce a new meson option to set the default
location for bash_completion. This will enable the installation
of completion files into the system location.
