Fixes#206
When I use unzipped sbt.bat it seems to runs ok, but using the msi installer version, this variable seems to expand and causes:
```
\sbt\bin\java9-rt-export.jar was unexpected at this time.
```
The flag can cause problems when there is another configuration
adding -Xms with a value bigger than 512M. The `java -version`
command will fail and no java version will be detected, causing
a failure in `checkJava`.
Apparently an empty comment line, meaning a single '#' on a line,
cannot be fed to scripted, which will complain with an odd error
message.
This commit tweaks the comments in the tests/fork-parallel file
so that there are no empty comment lines.
Fixes#3821
Initially I missed why #3821 was failing.
Looking at it again, the error message reads:
```
Caused by: java.lang.IllegalArgumentException: Interface (NGWin32NamedPipeLibrary) of library=kernel32 does not extend Library
at com.sun.jna.Native.loadLibrary(Native.java:566)
at sbt.internal.NGWin32NamedPipeLibrary.<clinit>(NGWin32NamedPipeLibrary.java:38)
... 7 more
```
Inside `Native.loadLibrary`, it requires the "library" interface to extend `com.sun.jna.Library`, which this adds.
There are just too many instances in which sbt's code relies on
the `lastModified`/`setLastModified` semantics, so instead of moving
to `get`/`setModifiedTime`, we use new IO calls that offer the new
timestamp precision, but retain the old semantics.
There are just too many instances in which sbt's code relies on
the `lastModified`/`setLastModified` semantics, so instead of moving
to `get`/`setModifiedTime`, we use new IO calls that offer the new
timestamp precision, but retain the old semantics.
Previously I was seeing the error upon the first scripted test. I thought it was because Main was somehow not early enough. It might just be because scripted technically runs as part of the build.
Ref sbt/io#110
Fixes#3823
When you launch a second instance of sbt on a build, prior to this change it was displaying `java.io.IOException: sbt server is already running` on every command. This make it a bit less aggressive, and just display a warning once.
```
[warn] Is another instance of sbt is running on this build?
[warn] Running multiple instances is unsupported
```
Dale Wijnand
eugene yokota
xuwei-k
Phil
Marcos Pereira
Dale Wijnand
Johannes Rudolph
cunei