Report jre deprecated warning when version is set implicitly (KT-26933)

#KT-26933 Fixed

idea/idea-gradle/src/org/jetbrains/kotlin/idea/inspections/gradle/DeprecatedGradleDependencyInspection.kt

@@ -37,7 +37,7 @@ import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrClosableBlo
 import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrMethodCall
 import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.path.GrCallExpression
 
-private val LibInfo.gradleMarker get() = "$groupId:$name:"
+private val LibInfo.gradleMarker get() = "$groupId:$name"
 
 class DeprecatedGradleDependencyInspection : GradleBaseInspection() {
     override fun buildVisitor(): BaseInspectionVisitor = DependencyFinder()
@@ -62,6 +62,11 @@ class DeprecatedGradleDependencyInspection : GradleBaseInspection() {
                 val libMarker = outdatedInfo.old.gradleMarker
 
                 if (dependencyText.contains(libMarker)) {
+                    val afterMarkerChar = dependencyText.substringAfter(libMarker).getOrNull(0)
+                    if (!(afterMarkerChar == '\'' || afterMarkerChar == '"' || afterMarkerChar == ':')) {
+                        continue
+                    }
+
                     val libVersion =
                         DifferentStdlibGradleVersionInspection.getResolvedLibVersion(
                             dependencyStatement.containingFile, outdatedInfo.old.groupId, listOf(outdatedInfo.old.name)

idea/idea-gradle/tests/org/jetbrains/kotlin/idea/codeInsight/gradle/GradleInspectionTest.kt

@@ -25,6 +25,7 @@ import org.jetbrains.kotlin.idea.inspections.gradle.DifferentKotlinGradleVersion
 import org.jetbrains.kotlin.idea.inspections.gradle.DifferentStdlibGradleVersionInspection
 import org.jetbrains.kotlin.idea.inspections.gradle.GradleKotlinxCoroutinesDeprecationInspection
 import org.jetbrains.kotlin.idea.inspections.runInspection
+import org.jetbrains.plugins.gradle.tooling.annotation.TargetVersions
 import org.junit.Assert
 import org.junit.Test
 
@@ -344,6 +345,44 @@ class GradleInspectionTest : GradleImportingTestCase() {
         )
     }
 
+    @TargetVersions("4.9+")
+    @Test
+    fun testJreIsDeprecatedWithoutImplicitVersion() {
+        val localFile = createProjectSubFile(
+            "build.gradle", """
+            group 'Again'
+            version '1.0-SNAPSHOT'
+
+            buildscript {
+                repositories {
+                    mavenCentral()
+                }
+
+                dependencies {
+                    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.0")
+                }
+            }
+
+            apply plugin: 'kotlin'
+
+            dependencies {
+                compile "org.jetbrains.kotlin:kotlin-stdlib-jre8"
+            }
+            """
+        )
+
+        importProject()
+
+        val tool = DeprecatedGradleDependencyInspection()
+        val problems = getInspectionResult(tool, localFile)
+
+        Assert.assertTrue(problems.size == 1)
+        Assert.assertEquals(
+            "kotlin-stdlib-jre8 is deprecated since 1.2.0 and should be replaced with kotlin-stdlib-jdk8",
+            problems.single()
+        )
+    }
+
     @Test
     fun testObsoleteCoroutinesUsage() {
         val localFile = createProjectSubFile(