Relocate stan/lang/rethrow_located.hpp

[rok-cesnovar]

Submission Checklist

• Run unit tests: ./runTests.py src/test/unit
• Run cpplint: make cpplint
• Declare copyright holder and open-source license: see below

Summary

Fixes one part of #1448 by relocating relocate_rethrow to /model.

This is the first PR where we move the rethrow_located file and change the namespace but still keep a duplicate in the original namespace.

This is so the tests will pass, we can then update stanc3 to use the new namespace and then remove the duplicates.

Copyright and Licensing

Please list the copyright holder for the work you are submitting (this will be you or your assignee, such as a university or company): Rok Češnovar

By submitting this pull request, the copyright holder is agreeing to license the submitted work under the following licenses:

• Code: BSD 3-clause (https://opensource.org/licenses/BSD-3-Clause)
• Documentation: CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

[stan-buildbot]

---

Name	Old Result	New Result	Ratio	Performance change( 1 - new / old )
gp_pois_regr/gp_pois_regr.stan	5.15	5.07	1.02	1.49% faster
low_dim_corr_gauss/low_dim_corr_gauss.stan	0.02	0.02	1.0	-0.07% slower
eight_schools/eight_schools.stan	0.1	0.09	1.07	6.33% faster
gp_regr/gp_regr.stan	0.23	0.23	0.99	-0.66% slower
irt_2pl/irt_2pl.stan	6.47	6.44	1.0	0.44% faster
performance.compilation	85.69	84.49	1.01	1.41% faster
low_dim_gauss_mix_collapse/low_dim_gauss_mix_collapse.stan	8.02	7.64	1.05	4.8% faster
pkpd/one_comp_mm_elim_abs.stan	20.27	20.95	0.97	-3.39% slower
sir/sir.stan	93.07	91.82	1.01	1.34% faster
gp_regr/gen_gp_data.stan	0.05	0.05	0.99	-0.95% slower
low_dim_gauss_mix/low_dim_gauss_mix.stan	2.98	2.97	1.0	0.48% faster
pkpd/sim_one_comp_mm_elim_abs.stan	0.31	0.33	0.95	-5.26% slower
arK/arK.stan	1.74	1.74	1.0	-0.07% slower
arma/arma.stan	0.77	0.78	0.99	-0.85% slower
garch/garch.stan	0.57	0.61	0.94	-6.74% slower
Mean result: 0.999879394177

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Jenkins Console Log
Blue Ocean
Commit hash: 9a1b01d

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Machine information

ProductName: Mac OS X ProductVersion: 10.11.6 BuildVersion: 15G22010

CPU:
Intel(R) Xeon(R) CPU E5-1680 v2 @ 3.00GHz

G++:
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 7.0.2 (clang-700.1.81)
Target: x86_64-apple-darwin15.6.0
Thread model: posix

Clang:
Apple LLVM version 7.0.2 (clang-700.1.81)
Target: x86_64-apple-darwin15.6.0
Thread model: posix

[rok-cesnovar]

Closing, will address this once we decide to remove stanc2. The location of this file will need to be coordinate with rstan.