[mix-release] set useful permissions
[mix-release] set useful permissions

* somewhere in the mix-release building process (relx/exrm)
  permissions broke
* this commit fixes the known issues by explicitly setting
  them to 0755 (instead of 0700) for executables

thz/meta-caros,GalaxyGorilla/meta-caros,RoadRunnr/meta-caros,RoadRunnr/meta-caros,wfailla/meta-caros,wfailla/meta-caros,carosio/meta-caros,carosio/meta-caros,hsychla/meta-caros,thz/meta-caros,thz/meta-caros,tlnd/meta-caros,umatomba/meta-caros,wfailla/meta-caros,wfailla/meta-caros,RoadRunnr/meta-caros,RoadRunnr/meta-caros,hsychla/meta-caros,carosio/meta-caros,umatomba/meta-caros,hsychla/meta-caros,tlnd/meta-caros,umatomba/meta-caros,carosio/meta-caros,thz/meta-caros,tlnd/meta-caros,GalaxyGorilla/meta-caros,umatomba/meta-caros,RoadRunnr/meta-caros,thz/meta-caros,GalaxyGorilla/meta-caros,tlnd/meta-caros,wfailla/meta-caros,GalaxyGorilla/meta-caros,GalaxyGorilla/meta-caros,hsychla/meta-caros,carosio/meta-caros,hsychla/meta-caros,umatomba/meta-caros,tlnd/meta-caros