Squashed 'src/secp256k1/' content from commit ad2028f

git-subtree-dir: src/secp256k1
git-subtree-split: ad2028f9890ca40bdd32055aa0fe5c1c9af0e485

.gitignore

@@ -0,0 +1,35 @@
+bench_inv
+bench_sign
+bench_verify
+tests
+*.exe
+*.so
+*.a
+!.gitignore
+
+Makefile
+configure
+.libs/
+Makefile.in
+aclocal.m4
+autom4te.cache/
+config.log
+config.status
+*.tar.gz
+*.la
+libtool
+.deps/
+.dirstamp
+build-aux/
+*.lo
+*.o
+*~
+src/libsecp256k1-config.h
+src/libsecp256k1-config.h.in
+m4/libtool.m4
+m4/ltoptions.m4
+m4/ltsugar.m4
+m4/ltversion.m4
+m4/lt~obsolete.m4
+src/stamp-h1
+libsecp256k1.pc