Based on the patch from Babt
+ support for USE_APACHE= num-num
+ support for USE_APACHE= -num
This was an allowd use case and should be supported
until we shipp only one apache version per release.
Additional found a possible issu on 8.x/9.3 but haven't
found the origin (backported make does not fix it)
Issue on 8.x/9.3 but OK on 10
_APACHE_WANTED_VERSION:= ${_APACHE_WANTED_VERSIONS:O:u:M${DEFAULT_APACHE_VERSION}}
=> resultes in www/apache}
_APACHE_WANTED_VERSION:= ${_APACHE_WANTED_VERSIONS:O:u:MDEFAULT_APACHE_VERSION}
=> OK on all supported releases