Checkin some developer convenience scripts.

scripts/devel-stub.conf

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+#
+# This is a debug conf file that the scripts/devel-stub.sh  script uses
+# to control the ivl core. The contents of this file are normally written
+# to a temporary file by the driver program, but for devel purposes, where
+# the driver program is not used, this config substitutes.
+#
+# NOTE: DO NOT INSTALL THIS FILE!
+#
+generation:2005
+generation:specify
+generation:xtypes
+generation:verilog-ams
+iwidth:32
+sys_func:vpi/system.sft
+sys_func:vpi/va_math.sft
+warnings:implicit
+debug:eval_tree
+debug:elaborate
+debug:scopes
+debug:synth2
+out:a.out
+ivlpp:./ivlpp/ivlpp -D__ICARUS__ -L -Pfoo.pp
+sys_func:scripts/devel-stub.sft

scripts/devel-stub.sft

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+
+# This is an example function table.
+$realtime vpiSysFuncReal
+
+$verywide vpiSysFuncSized 128 signed

scripts/devel-stub.sh

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+
+# This is a little developer convenience script to run the ivl core program
+# in place with the stub target. It runs the ivl core verbose, with diagnostic
+# output files enable, and without the driver program or preprocessor.
+# It is useful only for development of the ivl core program.
+#
+# Run this script in the source directory for the ivl core program so that
+# the patch to the other components is correct.
+#
+# NOTE: DO NOT INSTALL THIS FILE.
+
+./ivl -v -Ctgt-stub/stub.conf -C./scripts/devel-stub.conf -Pa.pf -Na.net -fDLL=tgt-stub/stub.tgt foo.vl
+
+echo "*** ivl command completed, rc=$?"