Qt: Remove remaining boost usage
* lang/qt/src/dataprovider.h, lang/qt/src/decryptjob.h, lang/qt/src/decryptverifyjob.h, lang/qt/src/encryptjob.h, lang/qt/src/qgpgmeadduseridjob.cpp, lang/qt/src/qgpgmechangeexpiryjob.cpp, lang/qt/src/qgpgmechangeownertrustjob.cpp, lang/qt/src/qgpgmechangepasswdjob.cpp, lang/qt/src/qgpgmedecryptjob.cpp, lang/qt/src/qgpgmedecryptverifyjob.cpp, lang/qt/src/qgpgmedeletejob.cpp, lang/qt/src/qgpgmedownloadjob.cpp, lang/qt/src/qgpgmeencryptjob.cpp, lang/qt/src/qgpgmeexportjob.cpp, lang/qt/src/qgpgmeimportfromkeyserverjob.cpp, lang/qt/src/qgpgmeimportjob.cpp, lang/qt/src/qgpgmekeygenerationjob.cpp, lang/qt/src/qgpgmekeylistjob.cpp, lang/qt/src/qgpgmenewcryptoconfig.cpp, lang/qt/src/qgpgmenewcryptoconfig.h, lang/qt/src/qgpgmesignencryptjob.cpp, lang/qt/src/qgpgmesignjob.cpp, lang/qt/src/qgpgmesignkeyjob.cpp, lang/qt/src/qgpgmeverifydetachedjob.cpp, lang/qt/src/qgpgmeverifyopaquejob.cpp, lang/qt/src/signencryptjob.h, lang/qt/src/signjob.h, lang/qt/src/threadedjobmixin.cpp, lang/qt/src/threadedjobmixin.h, lang/qt/src/verifydetachedjob.h, lang/qt/src/verifyopaquejob.h: Remove boost usage.
Mostly done with search and replace.