test: Fix SyntaxWarnings on escapes in Python strings

This is the remaining batch of SyntaxWarning cleanups in the test/
directory, as flagged by Python 3.8 (now tested with 3.8.0b4).  Most of
these are escapes in strings that are not recognized as Python-language
escapes up front, due to the embedded nature of testing - tests write a
string to a file which is actually Python (code or sconscript) which is
later to be executed.

Also changed the timestamp-fallback test to eliminate an imp module
DeprecationWarning: since in all supported Python versions haslib
is stdlib, drop that skip check; the md5 skip check can be a simple
import now.

My test runs with 3.8 show no SyntaxWarnings after this.

Signed-off-by: Mats Wichmann <mats@linux.com>

2 files changed, 5 insertions, 5 deletions

diff --git a/test/Java/JARFLAGS.py b/test/Java/JARFLAGS.py
index 39a0a6c..6983bf7 100644
--- a/test/Java/JARFLAGS.py
+++ b/test/Java/JARFLAGS.py
@@ -59,10 +59,10 @@ public class Example1
 """)
 
 expect = test.wrap_stdout("""\
-javac -d classes -sourcepath src src.Example1\.java
-jar cvf test.jar -C classes src.Example1\.class
+javac -d classes -sourcepath src src.Example1\\.java
+jar cvf test.jar -C classes src.Example1\\.class
 .*
-adding: src.Example1\.class.*
+adding: src.Example1\\.class.*
 """ % locals())
 
 
diff --git a/test/Java/JAVABOOTCLASSPATH.py b/test/Java/JAVABOOTCLASSPATH.py
index 196cc54..8aaf869 100644
--- a/test/Java/JAVABOOTCLASSPATH.py
+++ b/test/Java/JAVABOOTCLASSPATH.py
@@ -84,8 +84,8 @@ public class Example2
 bootclasspath = os.pathsep.join(['dir1', 'dir2'])
 
 expect = """\
-javac -bootclasspath %(bootclasspath)s -d class -sourcepath com com.Example1\.java
-javac -bootclasspath %(bootclasspath)s -d class -sourcepath com com.Example2\.java
+javac -bootclasspath %(bootclasspath)s -d class -sourcepath com com.Example1\\.java
+javac -bootclasspath %(bootclasspath)s -d class -sourcepath com com.Example2\\.java
 """ % locals()
 
 test.run(arguments = '-Q -n .', stdout = expect, match=TestSCons.match_re)