pkg/create: include the program source in the package

sys/man/1/pkg

@@ -38,7 +38,7 @@ then packs it into a
 compressed
 .IR tar (1)
 archive suitable for upload to a package
-repository.
+repository. The source directory should be provided as a full path.
 .TP
 .I Pkg/install 
 Install the package
@@ -58,7 +58,7 @@ from the local system.
 .SH EXAMPLES
 .LP
 Create the package
-.B irc7-2011.09.21
+.B irc7-2011.09.21:
 .sp 1
 .EX
 % pkg/create /sys/src/cmd/irc7-2011.09.21
@@ -67,7 +67,7 @@ Create the package
 .LP
 Install the
 .B Go
-programming language.
+programming language:
 .sp 1
 .EX
 % pkg/install go-2011.05.10

sys/src/cmd/pkg/create

@@ -6,8 +6,9 @@ echo Creating $i
 C=`{pwd}
 @{
 rfork en
+mkdir -p /tmp/$i/files/sys/src/cmd/$i
+dircp $d /tmp/$i/files/sys/src/cmd/$i
 cd $d
-mkdir /tmp/$i
 mk
 divergefs -p /tmp/$i /
 mk install clean