RFR: 8337281: build.gradle assumes all modules are named "javafx.$project" [v2]

[Kevin Rushforth]

> This PR fixes a bad assumption in a few places in `build.gradle`, which assumes that the module name can be derived from the name of the gradle project name by prepending `"javafx."` to the name rather than using the `moduleName` property of the project. In many of these places, the logic replaces dots with dashes in the name, but it does so by prefixing the project name with `"javafx-"` rather than doing a string replacement. This means that a module with more than one dot will only have the first one replaced.
> 
> I discovered this while working on the following two RFEs, both of which hit this bug:
> 
> [JDK-8309381](https://bugs.openjdk.org/browse/JDK-8309381): Support JavaFX incubator modules
> [JDK-8337280](https://bugs.openjdk.org/browse/JDK-8337280): Include jdk.jsobject module with JavaFX
> 
> Both of them need this bug to be fixed, so I am separating it out into its own issue.
> 
> ### Notes to reviewers
> 
> Most of the problematic logic is in the maven publication method, which is only enabled via `gradle -PMAVEN_PUBLISH=true` (in the absence of any other params, that won't actually try to publish anything, so is safe to use for testing). I left in some print statements for the purpose of testing, that I will remove with the next commit.
> 
> I tested this with the following branch, which is a preliminary prototype of adding jdk.jsobject to the build with the fix from _this_ PR applied: [test-module-name-jsobject](https://github.com/kevinrushforth/jfx/tree/test-module-name-jsobject).

Kevin Rushforth has updated the pull request incrementally with one additional commit since the last revision:

  Fix bug where String was being used as if it were a Project

-------------

Changes:
  - all: https://git.openjdk.org/jfx/pull/1518/files
  - new: https://git.openjdk.org/jfx/pull/1518/files/7d25dd82..50d90122

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1518&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1518&range=00-01

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/1518.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1518/head:pull/1518

PR: https://git.openjdk.org/jfx/pull/1518