Fix heredoc in sub dir

Also change log to use absolute path for consistency with the copy/link logs.

sbysrc/sby_core.py

@@ -1039,8 +1039,9 @@ class SbyTask(SbyConfig):
         self.makedirs(outdir)
 
         for dstfile, lines in self.verbatim_files.items():
-            dstfile = self.workdir + "/src/" + dstfile
-            self.log(f"Writing '{dstfile}'.")
+            dstfile = outdir / dstfile
+            self.log(f"Writing '{dstfile.absolute()}'.")
+            dstfile.parent.mkdir(parents=True, exist_ok=True)
 
             with open(dstfile, "w") as f:
                 for line in lines:

tests/links/more_dirs.sby

@@ -15,3 +15,6 @@ script dir/script.ys
 [files]
 here/dir ${WORKDIR}/../dir
 a/b/c.v prv32fmcmp.v
+
+[file here/doc]
+log foo

tests/links/more_dirs.sh

@@ -7,4 +7,4 @@ else
 fi
 python3 $SBY_MAIN -f $SBY_FILE $TASK $flags
 
-test -e ${WORKDIR}/src/here/dir -a -e ${WORKDIR}/src/a/b/c.v
+test -e ${WORKDIR}/src/here/dir -a -e ${WORKDIR}/src/a/b/c.v -a -e ${WORKDIR}/src/here/doc