Move all keyring management functions to a separate class.

KeyringIO imports, creates and deletes keys. Everything is declared
private in this class, and it can be called by K7Main only.

nbproject/Makefile-Debug.mk

@@ -40,6 +40,7 @@ OBJECTFILES= \
 	${OBJECTDIR}/GpgMEWorker.o \
 	${OBJECTDIR}/K7Main.o \
 	${OBJECTDIR}/KeyEdit.o \
+	${OBJECTDIR}/KeyringIO.o \
 	${OBJECTDIR}/LoopbackPassphraseProvider.o \
 	${OBJECTDIR}/PopupCertifyUserId.o \
 	${OBJECTDIR}/PopupCreate.o \
@@ -101,6 +102,11 @@ ${OBJECTDIR}/KeyEdit.o: KeyEdit.cpp
 	${RM} "$@.d"
 	$(COMPILE.cc) -g -DDEVTIME -I/usr/local/Wt-Debug/include -I/usr/include/gpgme++ -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/KeyEdit.o KeyEdit.cpp
 
+${OBJECTDIR}/KeyringIO.o: KeyringIO.cpp
+	${MKDIR} -p ${OBJECTDIR}
+	${RM} "$@.d"
+	$(COMPILE.cc) -g -DDEVTIME -I/usr/local/Wt-Debug/include -I/usr/include/gpgme++ -MMD -MP -MF "$@.d" -o ${OBJECTDIR}/KeyringIO.o KeyringIO.cpp
+
 ${OBJECTDIR}/LoopbackPassphraseProvider.o: LoopbackPassphraseProvider.cpp
 	${MKDIR} -p ${OBJECTDIR}
 	${RM} "$@.d"