Properly protect paths to sed, sha1sum, openssl

in Makefile.am, we used it without quoting it, causing build failure if
your openssl/sed/sha1sum happened to live in a directory with a space in
it (very common on windows)

changes/bug5065

+  o Major bugfixes:
+    - Fix build if path to sed, openssl or sha1sum contains spaces.
+      This is pretty common on Windows. Fixes bug 5065; bugfix on
+      0.2.2.1-alpha.
+

src/common/Makefile.am

@@ -20,9 +20,9 @@ noinst_HEADERS = address.h torlog.h crypto.h util.h compat.h aes.h torint.h tort
 
 common_sha1.i: $(libor_SOURCES) $(libor_crypto_a_SOURCES) $(noinst_HEADERS)
 	if test "@SHA1SUM@" != none; then \
-	  @SHA1SUM@ $(libor_SOURCES) $(libor_crypto_a_SOURCES) $(noinst_HEADERS) | @SED@ -n 's/^\(.*\)$$/"\1\\n"/p' > common_sha1.i; \
+	  "@SHA1SUM@" $(libor_SOURCES) $(libor_crypto_a_SOURCES) $(noinst_HEADERS) | "@SED@" -n 's/^\(.*\)$$/"\1\\n"/p' > common_sha1.i; \
 	elif test "@OPENSSL@" != none; then \
-	  @OPENSSL@ sha1 $(libor_SOURCES) $(libor_crypto_a_SOURCES) $(noinst_HEADERS) | @SED@ -n 's/SHA1(\(.*\))= \(.*\)/"\2  \1\\n"/p' > common_sha1.i; \
+	  "@OPENSSL@" sha1 $(libor_SOURCES) $(libor_crypto_a_SOURCES) $(noinst_HEADERS) | "@SED@" -n 's/SHA1(\(.*\))= \(.*\)/"\2  \1\\n"/p' > common_sha1.i; \
 	else \
 	  rm common_sha1.i; \
 	  touch common_sha1.i; \

src/or/Makefile.am

@@ -74,9 +74,9 @@ micro-revision.i: FORCE
 
 or_sha1.i: $(tor_SOURCES)
 	if test "@SHA1SUM@" != none; then \
-	  @SHA1SUM@ $(tor_SOURCES) | @SED@ -n 's/^\(.*\)$$/"\1\\n"/p' > or_sha1.i; \
+	  "@SHA1SUM@" $(tor_SOURCES) | "@SED@" -n 's/^\(.*\)$$/"\1\\n"/p' > or_sha1.i; \
 	elif test "@OPENSSL@" != none; then \
-	  @OPENSSL@ sha1 $(tor_SOURCES) | @SED@ -n 's/SHA1(\(.*\))= \(.*\)/"\2  \1\\n"/p' > or_sha1.i; \
+	  "@OPENSSL@" sha1 $(tor_SOURCES) | "@SED@" -n 's/SHA1(\(.*\))= \(.*\)/"\2  \1\\n"/p' > or_sha1.i; \
 	else \
 	  rm or_sha1.i; \
 	  touch or_sha1.i; \